.\" $OpenBSD: tls_load_file.3,v 1.4 2017/01/31 16:18:57 beck Exp $
.\"
.\" Copyright (c) 2014 Ted Unangst <tedu@openbsd.org>
.\" Copyright (c) 2015 Reyk Floeter <reyk@openbsd.org>
.\" Copyright (c) 2015 Bob Beck <beck@openbsd.org>
.\" Copyright (c) 2016, 2017 Joel Sing <jsing@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: January 31 2017 $
.Dt TLS_LOAD_FILE 3
.Os
.Sh NAME
.Nm tls_load_file ,
.Nm tls_config_set_ca_file ,
.Nm tls_config_set_ca_path ,
.Nm tls_config_set_ca_mem ,
.Nm tls_config_set_cert_file ,
.Nm tls_config_set_cert_mem ,
.Nm tls_config_set_key_file ,
.Nm tls_config_set_key_mem ,
.Nm tls_config_set_ocsp_staple_mem ,
.Nm tls_config_set_ocsp_staple_file ,
.Nm tls_config_set_keypair_file ,
.Nm tls_config_set_keypair_mem ,
.Nm tls_config_set_keypair_ocsp_file ,
.Nm tls_config_set_keypair_ocsp_mem ,
.Nm tls_config_add_keypair_file ,
.Nm tls_config_add_keypair_ocsp_mem ,
.Nm tls_config_add_keypair_ocsp_file ,
.Nm tls_config_add_keypair_mem ,
.Nm tls_config_clear_keys ,
.Nm tls_config_set_verify_depth ,
.Nm tls_config_verify_client ,
.Nm tls_config_verify_client_optional
.Nd TLS certificate and key configuration
.Sh SYNOPSIS
.In tls.h
.Ft uint8_t *
.Fo tls_load_file
.Fa "const char *file"
.Fa "size_t *len"
.Fa "char *password"
.Fc
.Ft int
.Fo tls_config_set_ca_file
.Fa "struct tls_config *config"
.Fa "const char *ca_file"
.Fc
.Ft int
.Fo tls_config_set_ca_path
.Fa "struct tls_config *config"
.Fa "const char *ca_path"
.Fc
.Ft int
.Fo tls_config_set_ca_mem
.Fa "struct tls_config *config"
.Fa "const uint8_t *cert"
.Fa "size_t len"
.Fc
.Ft int
.Fo tls_config_set_cert_file
.Fa "struct tls_config *config"
.Fa "const char *cert_file"
.Fc
.Ft int
.Fo tls_config_set_cert_mem
.Fa "struct tls_config *config"
.Fa "const uint8_t *cert"
.Fa "size_t len"
.Fc
.Ft int
.Fo tls_config_set_key_file
.Fa "struct tls_config *config"
.Fa "const char *key_file"
.Fc
.Ft int
.Fo tls_config_set_key_mem
.Fa "struct tls_config *config"
.Fa "const uint8_t *key"
.Fa "size_t len"
.Fc
.Ft int
.Fo tls_config_set_ocsp_staple_mem
.Fa "struct tls_config *config"
.Fa "const uint8_t *staple"
.Fa "size_t len"
.Fc
.Ft int
.Fo tls_config_set_ocsp_staple_file
.Fa "struct tls_config *config"
.Fa "const uint8_t *staple_file"
.Fc
.Ft int
.Fo tls_config_set_keypair_file
.Fa "struct tls_config *config"
.Fa "const char *cert_file"
.Fa "const char *key_file"
.Fc
.Ft int
.Fo tls_config_set_keypair_mem
.Fa "struct tls_config *config"
.Fa "const uint8_t *cert"
.Fa "size_t cert_len"
.Fa "const uint8_t *key"
.Fa "size_t key_len"
.Fc
.Ft int
.Fo tls_config_set_keypair_ocsp_file
.Fa "struct tls_config *config"
.Fa "const char *cert_file"
.Fa "const char *key_file"
.Fa "const char *staple_file"
.Fc
.Ft int
.Fo tls_config_set_keypair_ocsp_mem
.Fa "struct tls_config *config"
.Fa "const uint8_t *cert"
.Fa "size_t cert_len"
.Fa "const uint8_t *key"
.Fa "size_t key_len"
.Fa "const uint8_t *staple"
.Fa "size_t staple_len"
.Fc
.Ft int
.Fo tls_config_add_keypair_file
.Fa "struct tls_config *config"
.Fa "const char *cert_file"
.Fa "const char *key_file"
.Fc
.Ft int
.Fo tls_config_add_keypair_mem
.Fa "struct tls_config *config"
.Fa "const uint8_t *cert"
.Fa "size_t cert_len"
.Fa "const uint8_t *key"
.Fa "size_t key_len"
.Fc
.Ft int
.Fo tls_config_add_keypair_ocsp_file
.Fa "struct tls_config *config"
.Fa "const char *cert_file"
.Fa "const char *key_file"
.Fa "const char *staple_file"
.Fc
.Ft int
.Fo tls_config_add_keypair_ocsp_mem
.Fa "struct tls_config *config"
.Fa "const uint8_t *cert"
.Fa "size_t cert_len"
.Fa "const uint8_t *key"
.Fa "size_t key_len"
.Fa "const uint8_t *staple"
.Fa "size_t staple_len"
.Fc
.Ft void
.Fn tls_config_clear_keys "struct tls_config *config"
.Ft int
.Fo tls_config_set_verify_depth
.Fa "struct tls_config *config"
.Fa "int verify_depth"
.Fc
.Ft void
.Fn tls_config_verify_client "struct tls_config *config"
.Ft void
.Fn tls_config_verify_client_optional "struct tls_config *config"
.Sh DESCRIPTION
.Fn tls_load_file
loads a certificate or key from disk into memory to be loaded with
.Fn tls_config_set_ca_mem ,
.Fn tls_config_set_cert_mem
or
.Fn tls_config_set_key_mem .
A private key will be decrypted if the optional
.Ar password
argument is specified.
.Pp
.Fn tls_config_set_ca_file
sets the filename used to load a file
containing the root certificates.
.Pp
.Fn tls_config_set_ca_path
sets the path (directory) which should be searched for root
certificates.
.Pp
.Fn tls_config_set_ca_mem
sets the root certificates directly from memory.
.Pp
.Fn tls_config_set_cert_file
sets file from which the public certificate will be read.
.Pp
.Fn tls_config_set_cert_mem
sets the public certificate directly from memory.
.Pp
.Fn tls_config_set_key_file
sets the file from which the private key will be read.
.Pp
.Fn tls_config_set_key_mem
directly sets the private key from memory.
.Pp
.Fn tls_config_set_ocsp_staple_file
sets a DER-encoded OCSP response to be stapled during the TLS handshake from
the specified file.
.Pp
.Fn tls_config_set_ocsp_staple_mem
sets a DER-encoded OCSP response to be stapled during the TLS handshake from
memory.
.Pp
.Fn tls_config_set_keypair_file
sets the files from which the public certificate, and private key will be read.
.Pp
.Fn tls_config_set_keypair_mem
directly sets the public certificate, and private key from memory.
.Pp
.Fn tls_config_set_keypair_file
sets the files from which the public certificate, private key, and DER encoded
OCSP staple will be read.
.Pp
.Fn tls_config_set_keypair_ocsp_mem
directly sets the public certificate, private key, and DER encoded OCSP staple
from memory.
.Pp
.Fn tls_config_add_keypair_file
adds an additional public certificate, and private key from the specified files,
used as an alternative certificate for Server Name Indication (server only).
.Pp
.Fn tls_config_add_keypair_mem
adds an additional public certificate, and private key from memory, used as an
alternative certificate for Server Name Indication (server only).
.Pp
.Fn tls_config_add_keypair_ocsp_file
adds an additional public certificate, private key, and DER encoded OCSP staple
from the specified files, used as an alternative certificate for Server Name
Indication (server only).
.Pp
.Fn tls_config_add_keypair_ocsp_mem
adds an additional public certificate, private key, and DER encoded OCSP staple
from memory, used as an alternative certificate for Server Name Indication
(server only).
.Pp
.Fn tls_config_clear_keys
clears any secret keys from memory.
.Pp
.Fn tls_config_set_verify_depth
limits the number of intermediate certificates that will be followed during
certificate validation.
.Pp
.Fn tls_config_verify_client
enables client certificate verification, requiring the client to send
a certificate (server only).
.Pp
.Fn tls_config_verify_client_optional
enables client certificate verification, without requiring the client
to send a certificate (server only).
.Sh RETURN VALUES
.Fn tls_load_file
returns
.Dv NULL
on error or an out of memory condition.
.Pp
The other functions return 0 on success or -1 on error.
.Sh SEE ALSO
.Xr tls_config_ocsp_require_stapling 3 ,
.Xr tls_config_set_protocols 3 ,
.Xr tls_config_set_session_id 3 ,
.Xr tls_configure 3 ,
.Xr tls_init 3
.Sh HISTORY
.Fn tls_config_set_ca_file ,
.Fn tls_config_set_ca_path ,
.Fn tls_config_set_cert_file ,
.Fn tls_config_set_cert_mem ,
.Fn tls_config_set_key_file ,
.Fn tls_config_set_key_mem ,
and
.Fn tls_config_set_verify_depth
appeared in
.Ox 5.6
and got their final names in
.Ox 5.7 .
.Pp
.Fn tls_load_file ,
.Fn tls_config_set_ca_mem ,
and
.Fn tls_config_clear_keys
appeared in
.Ox 5.7 .
.Pp
.Fn tls_config_verify_client
and
.Fn tls_config_verify_client_optional
appeared in
.Ox 5.9 .
.Pp
.Fn tls_config_set_keypair_file
and
.Fn tls_config_set_keypair_mem
appeared in
.Ox 6.0 ,
and
.Fn tls_config_add_keypair_file
and
.Fn tls_config_add_keypair_mem
in
.Ox 6.1 .
.Sh AUTHORS
.An Joel Sing Aq Mt jsing@openbsd.org
with contibutions from
.An Ted Unangst Aq Mt tedu@openbsd.org
and
.An Bob Beck Aq Mt beck@openbsd.org .
.Pp
.Fn tls_load_file
and
.Fn tls_config_set_ca_mem
were written by
.An Reyk Floeter Aq Mt reyk@openbsd.org .
